| 摘要 |
PROBLEM TO BE SOLVED: To provide portable equipment capable of switching two optical systems with compact constitution. SOLUTION: A personal digital assistant where a 1st casing 1 in which an image sensor 8 is mounted and a 2nd casing 2 are coupled to be folded, is equipped with a 1st optical system which guides incident light to the image sensor 8 in a state where the personal digital assistant is developed, a 2nd optical system which guides the incident light to the image sensor 8 in a state where the personal digital assistant is folded, and a rotary prism lens 7 which is switched interlocked with developing or folding the personal digital assistant and guides the incident light guided by the 1st optical system or the incident light guided by the 2nd optical system to the image sensor 8. COPYRIGHT: (C)2006,JPO&NCIPI
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